Jump to content

Cardboard tube working as variable resonator

Andres Ramos



A nice expewriment from today was an idea coming from discussions with Jeff about applying cardboard tubes as bandpass resonators for human speech. It was a very simple setup. I took a piece of cardboard tube, put in a buzzer into one end (working on a steady frequency), covered this end with one hand and with the other hand I opened and closed the upper end of the tube in a random manner.

Basically the results are promising ic combined with random excitation of the buzzer.






Recommended Comments

  • Administrators
4 hours ago, Christine Vogts said:

Well..if I understand Chicken cacophony...

It sounds like in the very beginning... "Come back and play dominoes Ramos"..


Really? Sometimes my wife and me are playing 'Triomino', a variant of Domino with triangular shaped stones. We want to play it again at Christmas Eve this year.

Link to comment
Add a comment...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.